fix: adding --ignore-engines to yarn install because of @apollo/federation node <15 restriction

.gitlab-ci.yml

 image: "node:15.14"
 
+variables:
+  FF_GITLAB_REGISTRY_HELPER_IMAGE: 1
+
 stages:
   - setup
   - test

gitlab-ci/build.yml

@@ -13,4 +13,4 @@ build:
   script:
     - node -v
     - yarn build
-    - yarn install --frozen-lockfile --production --ignore-scripts
+    - yarn install --frozen-lockfile --production --ignore-scripts --ignore-engines

gitlab-ci/setup.yml

@@ -7,4 +7,4 @@ setup:
   interruptible: true
   script:
     - node -v
-    - yarn install --frozen-lockfile
+    - yarn install --frozen-lockfile --ignore-engines